Recently, the Ministry of Environmental Protection by the volatility of the newly revised "Boiler Air Pollutants Emission Standards" released in July this year, the implementation of this standard is known as by far the most stringent air pollution emission standards for boilers, boiler caused by the manufacturing sector.
Compared with the existing standards, new standards not only revised the traditional particulate matter and sulfur dioxide emission limits, for the first time proposed emission control standards for nitrogen oxides and mercury, Forced boiler manufacturers have to upgrade technology, from the source control boiler discharge atmospheric pollutants.
One side is desulphurization and denitrification entered the final stage, while the new emission standards of air pollutants are being introduced amendments to the boiler. Such as pollutant emissions from large wide range of small capacity monomer emission coal-fired boilers and other issues close to the ground long standing will once again be enlarged, comprehensive improvement of coal-fired boilers will undoubtedly become the next focus of urban air pollution control. Analysts believe that the implementation of the new standard direct-driven investment in environmental protection will reach 370 billion yuan to 4500 yuan, while the boiler manufacturing industry is facing exams has also led to the relevant environmental protection equipment market to break out again.
By the end of 2011, our country in the boiler 620,300 units, of which 09,700 units utility boilers, industrial boilers 610 600 units, with a total capacity of about 3,515,900 kilowatts. In 2012, industrial boilers reached 62.4 million units, about 98% of the total number of boilers.
In industrial boilers, coal-fired boiler is more than 80%, the annual consumption of 490 million tons of standard coal, the average efficiency of 65% to 70%, emissions remain high.
In 2012, coal-fired industrial boilers cumulative emissions of dust 4.1 million tons, 5.7 million tons of sulfur dioxide, nitrogen oxides 2.0 million tons respectively, accounting for 32% of total national emissions, 26% and 15%, a major cause of fog and haze one of the reasons.
For this reason, in the 2013 set off a nationwide clean energy alternative coal-fired boiler boiler, more than one place Shandong, Shanxi and other relevant measures have been introduced on clean energy alternative to coal-fired boiler work. "The introduction of the implementation of the most stringent standards, will set off a coal-fired boiler in the second round.
Four existing small and medium sized coal-fired boilers in China. One pollutant emissions from large, wide surface. Second, small-cell capacity, the average capacity of 8 tons / hour, the number of 10 tons / hour of small coal-fired boilers is 42 million units, accounting for two-thirds of the total. Third, emissions close to the ground, a great impact on quality. Fourth, boiler technology, main and auxiliary mismatch, poor health. In addition, most small boiler lack of dust removal, desulfurization and denitrification equipment, led to the current sulfur dioxide and dust emissions from boilers widespread non-compliance.
From the present point of view, domestic clean energy technology matures, the implementation of new emission standards for technology development has brought very good driving force for the future, who can stable up to standard technical requirements of the country, will have a presence in the market value Otherwise it can be eliminated.
Advantages and characteristics of electrically heated boilers: 1. The high quality heat source heating system can output the hot oil up to 350 ℃ for the thermal user under normal pressure liquid phase. The heating system all adopts Japanese Fuji temperature control instrument, uses the PID self-tuning intelligent temperature control technology, the control precision can reach ±1 ℃, the accurate control temperature range; The main heating power supply adopts solid-state module contactless switching circuit, adapts to frequent switching, and does not interfere with the power supply network. It also has anti-dry burning. The hot oil cooling system can be designed according to the user's requirements to meet the production process requirements of rapid cooling after heating up. 2. Energy saving, low operation cost of heating system is liquid phase closed-circuit circulation, the difference between oil outlet temperature and return oil temperature is 20 ℃ 30 ℃, that is to say, the temperature difference can reach service temperature only by heating 20 ℃ 30 ℃. At the same time, the equipment does not need water treatment equipment and there is no steam boiler running, run, drop, leakage and other heat losses, heat utilization rate is very high, compared with steam boiler, about 50% energy saving; Less investment in equipment because the heating system is simple, no water treatment equipment and more auxiliary equipment, boiler bear low pressure, so the whole system investment is less; 4. Safety because the system only bears pump pressure, heating system explosion-free The explosion is dangerous, so it is safer; 5. The environmental protection effect of environmental protection organic heat carrier boiler system is mainly reflected in the few emissions of flue gas, no pollution and thermal pollution. Characteristics: 1, low operating pressure: liquid phase conveying heat energy, can obtain a higher working temperature under lower operating pressure, heat carrier than the saturated steam pressure of water 70 times lower, the general operating pressure of heating is ≤ 0.3MPa. 2, high heating temperature: heating furnace heating temperature up to 280 ℃; automatic control of heating temperature, high sensitivity, stable heating. 3, safe and reliable: Fangkuai specialized in R & D and production of boilers, with Perfect operation control and safety monitoring device, easy to operate, safe and reliable. 4, environmental protection design: boiler equipment is equipped with a new type of electric heating system, electricity instead of coal, saving investment, environmental protection and pollution-free, at the same time the boiler heating up fast, high thermal efficiency, high efficiency and more economical!
Electric steam boiler to be taken by each of the cathodic protection measures components of the electric steam boiler is made of different materials. In order to prevent galvanic corrosion, cathodic protection measures must be taken. Sewage treatment electric steam boilers. Bottom electric steam boiler blowdown can prevent flue gas condensation. Since the flue gas is flue gas condensation (diesel or natural gas) and the flue gas temperature in the aqueous too low, water generated. A portion of the moisture is discharged from the chimney, the chimney wall is absorbed, the rest is deposited on the bottom of the chimney. Water produced by the following factors influence: flue gas temperature (efficiency 91%, the flue gas must be at a temperature of 170 ℃) where the total surface area heat chimney, chimney and chimney material. Maintenance of the burner. Electric steam boiler and burner maintenance, repair after steam supply. Because the products of combustion will corrode the boiler, clean up carbon deposits, therefore, not allow the products of combustion in the boiler memory stay too long. We first opened when an electric steam boiler burner door, the rear housing panel removed, unscrew the screws electric steam boiler cleaning the rear opening. Clean fuel gas piping with a wire brush. With a soft brush to clean the combustion chamber. Electric steam boiler to remove residue in the boiler, the cleaning opening is screwed on the screw, closing the burner door seal check is complete. If electric steam boilers installed in areas where temperatures below 0 ℃ must take the following precautions: If electric steam boiler room outside, the room temperature drops below 15 ℃ or 18 ℃, the electric steam boiler running all day long. If no one in the room for a long time, the water should be emptied in electric steam boilers.
Gas boiler room location should pay attention to these issues need to pay attention to the location of gas boiler room boiler room of a problem than how specific to the site, more customers just curious boiler room and other buildings safe distance, do have customers believe boiler room just fills the room, as long as the boiler plant went on line, do not need to sun and rain. But in fact, the boiler room location is very important, it is related to a series of questions of your initial investment and system planning, job handling and safety protection. With gas boiler, for example, for us to introduce issues related to pay attention to the orientation of the boiler room. 1, the orientation of the gas boiler room should be summarized gas type, boiler capacity, operating pressure, supply and return water temperature, the system in the form of building types and other factors to consider. 2, natural gas boiler room planning should be "boiler room planning norms" (GB50041-2008), "town gas planning norms" (GB50028-2006), "building plans for fire protection" (GB50016-2006), "the senior civilian in accordance with existing national norms architectural plans for fire protection "(GB50045-95) (2005), and" hot water boiler system for sale safety skills supervision "(labor pan word  No. 7) are summarized concluded. If there are local with local codes, with the satisfaction to consider. 3, gas boiler room should be set in separate buildings on the ground, if the conditions are bound, connected to the main building or need to set up in the basement of the main building, semi-basement, while the first floor, the top floor and center floor, shall be approved by the local fire, safety supervision and environmental protection part of the agreement. 4, gas boiler room directly prohibit people gathered in the room (such as public baths, classrooms, auditoriums, shops, restaurants, waiting rooms, etc.) or at the top, bottom, or top lax immediate neighborhood of the mouth on both sides. 5, the new residence should not be connected to the boiler room, boiler room and other adjacent buildings, the wall adjacent to the firewall. Boiler room on the ground should be flat without steps, and should prevent accumulation of water. 6, because the conditions there are shackles, located in the basement boiler need, center or top floor high-rise buildings or multi-layer, prior consent of the city, prefecture-level and above safety watchdog agree. In addition to the above requirements satisfaction, it should also be satisfied: (1) each boiler rated evaporation does not exceed 4t / h, the vapor pressure does not exceed the rated 1.6MPa. (2) oil is necessary, as a fuel gas or electric heating boiler. (3) the fuel supply line adapter using welding backing. 7, as provided in the boiler room in the basement or the first half-layer or multi-layer high-rise buildings, it is necessary to fit together the following conditions: (1) each boiler rated evaporation does not exceed 10t / h, the vapor pressure does not exceed the rated 1.6MPa. (2) Each boiler necessary to have reliable overpressure protection device interlock and interlock the bottom level protection. (3) accessories and safety interlock protection device for each boiler to regular maintenance and experiments to ensure active, reliable. (4) the building structure between the boiler should be the appropriate seismic measures. (5) operating independently fireman fireman operating permits necessary to hold the appropriate level of boiler and continuous operation of the same class more than five years, has not had trouble occurs. (6) the need to have lax security channel.
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